QCDE player kills a Tactical Transfer as Kane with a Heavy Machinegun. An hourglass bonus for active ability restoration is seen on the left.

Quake Champions: Doom Edition (also known as QC: Doom Edition) is a gameplay mod based on Quake Champions featuring custom classes, weapons and monsters. It is compatible with Zandronum 3.0, GZDoom from 1.8.6 to 3.2.5, D-Touch and Delta Touch and boasts balanced gameplay across the single player, deathmatch and cooperative game modes. It was granted the Multiplayer award at the 2018 Cacowards.

Player as Nyx snipes on fleeing airborne Kane with a railgun. The map is QCDE01: Blood Covenant by DBThanatos, a demake of the eponymous map from Quake Champions.

QCDE comes with two mapsets for Deathmatch and Last Man Standing modes: Aeon Deathmatch for QCDE (AeonQCDE.pk3) and QCDE maps (QCDEmaps1.3.pk3).

AeonQCDE is a version of AeonDM edited to contain QCDE weapons and specific map markers. QCDE maps consist of special contributions created specifically for QCDE by DBThanatos, RoosTer, MrEnchanter, Abysswalker and Ivan Dobrovski.

The stacks are “lower” compared to Doom, and light champions seem rather fragile since they have low caps for health and armour. However, this is countered by their abilities. Light champions have ways of healing or escaping dangerous situations -- as opposed to tanks, whose abilities are more about dealing with danger face-to-face.

The fact that stacks are relatively low overall is compensated by healing items giving much more health than traditional Doom pickups, and armor being much more common. Therefore, it's possible to lose health quickly, but so long as an escape route is available, lost health can be gained back in a heartbeat.

For single player, only “Medium” champions are recommended. Light Champion hitboxes are very slim, allowing them to fit through bars or other tight crevices where players aren’t supposed to fit. Conversely, Heavy Champion hitboxes are considerably bigger and won't fit in the tightest of places where the player might be expected to go. It's still possible to play any class, but if map progression is broken, the responsibility is on the player.

Regarding difficulty, playing single player or cooperative with Medium champions is playing QCDE in “normal” mode. Playing with Light champions is more of a challenge, and playing with Heavy ones is a bit on the easier side because of their large stacks.

Abilities define the play style of the characters. For example, Kane, being inherently fast, has even greater speed during crouch-slide, which allows both to deliver firepower right into the enemy's lair and retreat, possibly using Stroyent Injection which instantly restores his health in case his plan goes awry. As the opposite example, Terminator hardly ever needs to retreat, as his ability to passively restore ammo alongside a freely triggered rocket barrage ensures that he can deal with any threat without slowing the pace.

Sixth Sense: When Hunter aims her crosshairs at an enemy, they create a trail she can follow (PvP only).

Spoils of the Hunt: When Hunter kills an enemy, she gets either a max HP, Armor or ammo increase that lasts until she dies.

Cracked Lungs: Postal Dude receives a +75 health overcharge upon collecting a Mega Health that doesn't decay for 40 seconds. After that time, unless he picks up another Mega Health, his overstack will quickly decay or he will take 25 hp damage if he has no overstack.

Crouch Jump: When jumping while crouching, Postal Dude will perform a high jump.

Ammo Regeneration: Terminator slowly regenerates ammo for his selected weapon. In coop and TDM, excess ammo is dropped for allies to pick up.

Cannonball: Zedek deals falling damage in the area where he lands from heights.

Iron Feet: Zedek is immune to environmental damage (PvE only)

Thrust Dodge: Inquisitor can accelerate in a direction by double tapping the key.

Still Defense: Inquisitor receives less damage when not moving.

Armor Hoarder: Sorgaul gets more armor from every pickup.

Stockpile: Keel regenerates grenades by picking up any ammunition, including that which goes with weapon pickups.

Murderface: Eradicator's damage increases as he kills enemies.

Inductive Healing: Picking up medium and large healing items will also grant Eradicator some armor.

Excess Matter: Vor Matur has a massive HP pool, but cannot pick up armour. He also receives less knockback from hits.

Player can use monsters from Doom, Doom 4, Quake 1, Quake 2 and Quake 4. More than that, players can mix and match monster sets -- for example, picking both Quake 2 and Quake 4 would be fighting against united Strogg forces.

All monsters emit damage numbers when hurt.

Monster randomization has two modes: classic, as known by the likes of Aeons of Death and other randomizer mods, and one theme per map, selecting only one of the enabled themes at random for each map.